We just have an extra charger in the main examroom. If you bought multiples of the same model and their related chargers this could work. But as of right now we leave the laptop in the examroom and the MA and our Doc just sign in and out as they come and go. So out doc has a charger at her desk and in the examroom. Now the screen is nice and bright, no performance issues, small footprint on counter and good machine.
We bought two convertable tablets with the idea of using the tablet feature a lot because with our first mistake EMR she was using it quite a bit. But she has not really used the tablet features at all with AC and it seems that it just isn't needed. I have heard many other users here say the same thing... I'd say just get a good strong laptop with the features you want. Don't forget screen size, because you will be looking at this all day five days a week and that makes a big difference in the long run.